Electron-beam Computed Tomography (EBCT)

(Ultrafast CT)

Definition

Electron-beam computed tomography (EBCT) is a fast, highly sensitive, and noninvasive technique for detecting calcium build-up in coronary arteries. It uses an electron “gun” as opposed to a regular x-ray to scan the chest for coronary artery calcium.

The degree of calcium build-up in coronary arteries is an accurate measure of the degree of
atherosclerosis, a narrowing and hardening of the arteries that can lead to
heart attack,
stroke, and other serious conditions.

EBCT is useful in screening people for
coronary heart disease (CHD)
and cardiac events in their earliest stages,
before
symptoms (such as chest pain) actually arise. This is important because as many as half of all first coronary events, including sudden
cardiac arrest
and heart attack, occur in people with no symptoms of heart disease (ie, “asymptomatic” people).

Because EBCT technology is relatively new and undergoing evaluation, availability is limited and some insurers do not cover the procedure.

Parts of the Body Involved

EBCT scans are normally used to evaluate coronary arteries in the chest.

Reasons for Procedure

EBCT is used for the following purposes:

To determine short-term risk of coronary heart disease (CHD) in asymptomatic people

To determine likelihood of CHD in people with abnormal chest pain

To determine advancement or decline of CHD in people being treated for CHD (for example, those taking cholesterol-lowering medications)

What to Expect

Prior to Procedure

Your doctor will discuss your overall health and medical history, including any risk factors you have for coronary heart disease, to determine if EBCT screening is appropriate in your case. EBCT is normally recommended for men over 40 and women over 45.

Anesthesia

No anesthesia is necessary for this procedure.

Description of the Procedure

You will be asked to lie down on a padded table under an arch-shaped scanner. You may remain clothed and your head will not be enclosed at any time. The scanner moves over your body and takes pictures of your internal organs. During the scan, you will be asked to hold your breath to help you remain motionless, but you may breathe during pauses. A radiographer who runs the scan will be present throughout the scan and will respond to any questions or concerns you have.

How Long Will It Take?

The procedure takes about 10-15 minutes, and the actual scanning time is only a few seconds.

Will It Hurt?

No, EBCT causes no discomfort.

Possible Complications

There are no known complications of EBCT. EBCT is considered a safe test which allows for minimal radiation exposure.

Average Hospital Stay

None. EBCT is an outpatient procedure.

Outcome

The EBCT software used is able to measure the size and density of calcium deposits in your arteries, reported as your “calcification score.”

Depending on your score, your doctor will discuss any measures you should take to decrease your risk of coronary heart disease, such as increasing exercise or taking medication. Your doctor may also recommend further diagnostic testing or even surgery if your score is very high.

Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY.
Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.

DISCLAIMER: This information is intended for educational purposes. EBSCO is in no way liable for the use of this information and makes no warranty or guarantee as to its accuracy.